Ion conductive character of low-yttria-content yttria-stabilized zirconia at low temperature

2020 ◽  
Author(s):  
Tomonori Nishimura ◽  
Toshiya Kojima ◽  
Kosuke Nagashio ◽  
Masaaki Niwa
Keyword(s):  
Low Temperature ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Yttria Content

scholarly journals Influence of Preaging Temperature on the Indentation Strength of 3Y-TZP Aged in Ambient Atmosphere

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2767
Author(s):  
Ki-Won Jeong ◽  
Jung-Suk Han ◽  
Gi-Uk Yang ◽  
Dae-Joon Kim
Keyword(s):  
Residual Stress ◽  
Phase Transformation ◽  
Low Temperature ◽  
Compressive Residual Stress ◽  
Yttria Stabilized Zirconia ◽  
Ambient Atmosphere ◽  
Aged Specimen ◽  
Stabilized Zirconia ◽  
M Phase ◽  
The Relationship

Yttria-stabilized zirconia (3Y-TZP) containing 0.25% Al2O3, which is resistant to low temperature degradation (LTD), was aged for 10 h at 130–220 °C in air. The aged specimens were subsequently indented at loads ranging from 9.8 to 490 N using a Vickers indenter. The influence of preaging temperature on the biaxial strength of the specimens was investigated to elucidate the relationship between the extent of LTD and the strength of zirconia restorations that underwent LTD. The indented strength of the specimens increased as the preaging temperature was increased higher than 160 °C, which was accompanied by extensive t-ZrO2 (t) to m-ZrO2 (m) and c-ZrO2 (c) to r-ZrO2 (r) phase transformations. The influence of preaging temperature on the indented strength was rationalized by the residual stresses raised by the t→m transformation and the reversal of tensile residual stress on the aged specimen surface due to the indentation. The results suggested that the longevity of restorations would not be deteriorated if the aged restorations retain compressive residual stress on the surface, which corresponds to the extent of t→m phase transformation less than 52% in ambient environment.

Medium-Low-Temperature NO2 Sensor Based on YSZ Solid Electrolyte and Mesoporous WO3 Sensing Electrode for Detection of Vehicle Emissions

NANO ◽  
2021 ◽  
pp. 2150083
Author(s):  
Cheng Zhang ◽  
Chuning Jiang ◽  
Xiaohong Zheng ◽  
Xin Hong
Keyword(s):  
Low Temperature ◽  
Electromotive Force ◽  
Electrochemical Impedance ◽  
Yttria Stabilized Zirconia ◽  
Mixed Potential ◽  
Stabilized Zirconia ◽  
Excellent Performance ◽  
Hard Template ◽  
No2 Sensor ◽  
Hard Template Method

A mixed potential-type NO2 sensor was fabricated using yttria-stabilized zirconia (YSZ) as the electrolyte and mesoporous WO3 as the sensing electrode for the detection of NO2 in vehicle exhausts. The mesoporous WO3 with a diameter of 7 nm was synthesized using the hard template method. The sensor showed excellent performance in the detection of 30–500[Formula: see text]ppm of NO2 at 300∘C and 500∘C. However, commercial WO3 only operate well at 500∘C. The response of the mesoporous WO3 was higher and the test temperature was lower compared to that of commercial WO3. XPS combined with NO2-TPD was used to explain the high activity of mesoporous WO3 at medium-low temperature, and the mechanism of mixed electromotive force was verified by electrochemical impedance spectroscopy. Furthermore, the sensor exhibited high NO2 selectivity in the presence of interfering gases, such as NO, CO, CO2 and NH3. Most importantly, the sensor had excellent repeatability and stability.

Electrospun yttria-stabilized zirconia nanofibers for low-temperature solid oxide fuel cells

2017 ◽  
Vol 42 (24) ◽  
pp. 15903-15907 ◽  
Author(s):  
Ja Yang Koo ◽  
Yonghyun Lim ◽  
Young Beom Kim ◽  
Doyoung Byun ◽  
Wonyoung Lee
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Oxide Fuel ◽  
Stabilized Zirconia

Miniaturized Low-temperature Solid Oxide Fuel Cells with an Yttria-stabilized-zirconia Foil Electrolyte

2019 ◽  
Vol 25 (2) ◽  
pp. 989-993 ◽  
Author(s):  
Anna Evans ◽  
Anja Bieberle-Hutter ◽  
Lorenz J. Bonderer ◽  
Philipp Chen ◽  
Damian Hodel ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Oxide Fuel ◽  
Stabilized Zirconia

Thin Films: On Proton Conductivity in Porous and Dense Yttria Stabilized Zirconia at Low Temperature (Adv. Funct. Mater. 15/2013)

2013 ◽  
Vol 23 (15) ◽  
pp. 1858-1858 ◽  
Author(s):  
Barbara Scherrer ◽  
Meike V.F. Schlupp ◽  
Dieter Stender ◽  
Julia Martynczuk ◽  
Jan G. Grolig ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Proton Conductivity ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

scholarly journals Correction: Low-Temperature Superionic Conductivity in Strained Yttria-Stabilized Zirconia

2010 ◽  
Vol 20 (19) ◽  
pp. 3194-3194 ◽  
Author(s):  
Michael Sillassen ◽  
Per Eklund ◽  
Nini Pryds ◽  
Erik Johnson ◽  
Ulf Helmersson ◽  
...  
Keyword(s):  
Low Temperature ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Superionic Conductivity

A homogeneous grain-controlled ScSZ functional layer for high performance low-temperature solid oxide fuel cells

2018 ◽  
Vol 6 (34) ◽  
pp. 16506-16514 ◽  
Author(s):  
Soonwook Hong ◽  
Jonghyun Son ◽  
Yonghyun Lim ◽  
Hwichul Yang ◽  
Fritz B. Prinz ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
High Performance ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Oxide Fuel ◽  
Stabilized Zirconia ◽  
Functional Layer ◽  
Cell Systems

Scandia-stabilized zirconia (ScSZ) is employed as a cathodic functional layer onto yttria-stabilized zirconia based fuel cell systems for low-temperature solid oxide fuel cells.

Effects of homoepitaxial surfaces and interface compounds on the in-plane epitaxy of YBCO films on yttria-stabilized zirconia

1992 ◽  
Vol 7 (7) ◽  
pp. 1641-1651 ◽  
Author(s):  
D.K. Fork ◽  
S.M. Garrison ◽  
Marilyn Hawley ◽  
T.H. Geballe
Keyword(s):  
Optimal Transport ◽  
Pulsed Laser ◽  
Yttria Stabilized Zirconia ◽  
Laser Deposition ◽  
Growth Surface ◽  
Stabilized Zirconia ◽  
Ybco Films ◽  
Yttria Content ◽  
Compositional Variations

Control of the in-plane epitaxial alignment of c-axis YBa2Cu3O7−δ (YBCO) films on yttria-stabilized zirconia (YSZ) substrates is necessary for achieving optimal transport properties. We have used pulsed laser deposition to grow homoepitaxial YSZ and heteroepitaxial CeO2 on YSZ single crystal substrates. This procedure dramatically improves the epitaxy of YBCO and reduces the number of low and high angle grain boundaries. We have also studied the effects of preparing the YSZ growth surface with approximately monolayer amounts of CuO, Y2O3, BaO, and BaZrO3 to determine the effects these compositional variations have on the subsequent YBCO epitaxy. CuO, Y2O3, and BaZrO3 induce an in-plane crystallography of YBCO distinct from that initiated with BaO. Both homoepitaxy and monolayer depositions may be carried out in situ and are simple and effective for controlling the epitaxy and electrical properties of YBCO on YSZ. The effects of substrate temperature, oxygen pressure, and yttria content have also been studied.

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